The study of interactions of living organisms with one another and with their envirorment.
Describes living elements in the envirorment.
Describes the nonliving part of the enviorment.
A group of organisms of the same species that live in a specific geographical area.
All the poppulations of species that live together.
a community of organisms and their abiotic environment
the part of earth where life exists
organism that obtains energy by eating only plants
organism that obtains energy by eating animals
an animal that eats both plants and animals
a series of steps in which organisms transfer energy by eating and being eaten
a diagram that shows the feeding relationships between organisms in an ecosystem
The largest population that an area can support
an organism that is killed and eaten by another organism
organism that eats other organisms
relationship in which two species live closely together
A relashinship between species where both benefit
a relationship between two organisms in which one organism benefits and the other is unaffected
A relationship between two organisms of different species where one benefits and the other is harmed